Laughing all the way ... Ho, Ho, holmium!
Wolf
J S
JS
D000535:Aluminum; D006695:Holmium; D006801:Humans; D007834:Lasers; D017602:Lithotripsy, Laser; D015019:Yttrium
D015019:Yttrium; D000535:Aluminum; D006695:Holmium